BE818701A - MAGNETIC HEAD AND ITS MANUFACTURING PROCESS - Google Patents

MAGNETIC HEAD AND ITS MANUFACTURING PROCESS

Info

Publication number
BE818701A
BE818701A BE147481A BE147481A BE818701A BE 818701 A BE818701 A BE 818701A BE 147481 A BE147481 A BE 147481A BE 147481 A BE147481 A BE 147481A BE 818701 A BE818701 A BE 818701A
Authority
BE
Belgium
Prior art keywords
manufacturing process
magnetic head
magnetic
head
manufacturing
Prior art date
Application number
BE147481A
Other languages
French (fr)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of BE818701A publication Critical patent/BE818701A/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/03—Biasing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/1272—Assembling or shaping of elements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic
    • Y10T29/49057—Using glass bonding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
BE147481A 1973-08-10 1974-08-09 MAGNETIC HEAD AND ITS MANUFACTURING PROCESS BE818701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00387564A US3846840A (en) 1973-08-10 1973-08-10 Read/write and longitudinal edge erase head assembly having multiple similarly shaped layers

Publications (1)

Publication Number Publication Date
BE818701A true BE818701A (en) 1974-12-02

Family

ID=23530425

Family Applications (1)

Application Number Title Priority Date Filing Date
BE147481A BE818701A (en) 1973-08-10 1974-08-09 MAGNETIC HEAD AND ITS MANUFACTURING PROCESS

Country Status (10)

Country Link
US (1) US3846840A (en)
JP (1) JPS5331763B2 (en)
BE (1) BE818701A (en)
CA (1) CA1031861A (en)
DE (1) DE2437094C3 (en)
FR (1) FR2240495B1 (en)
GB (1) GB1422509A (en)
IT (1) IT1015220B (en)
NL (1) NL7410455A (en)
SE (1) SE400402B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5118519A (en) * 1974-08-06 1976-02-14 Matsushita Electric Ind Co Ltd JIKI HETSUDOSOCHI
US4115827A (en) * 1975-09-22 1978-09-19 Ampex Corporation Magnetic transducer for narrow track recording and playback
US4058846A (en) * 1976-06-21 1977-11-15 International Business Machines Corporation Grounded transducer for magnetic record disks
US4110804A (en) * 1977-07-21 1978-08-29 International Business Machines Corporation Read/write and tunnel erase magnetic head assembly
NL7803231A (en) * 1978-03-28 1979-10-02 Philips Nv MAGNETIC ERASHEAD.
US4300179A (en) * 1979-09-04 1981-11-10 Minnesota Mining And Manufacturing Co. Composite magnetic head with multitrack support structure
US4276574A (en) * 1979-12-06 1981-06-30 International Business Machines Corporation Read/write and tunnel erase magnetic head assembly
JPS56156920A (en) * 1980-04-30 1981-12-03 Toshiba Corp Composite magnetic head and its production
JPS5769524A (en) * 1980-10-17 1982-04-28 Ricoh Co Ltd Magnetic head
JPS57120309A (en) * 1981-01-19 1982-07-27 Canon Inc Manufacture of magnetic core
US4368548A (en) * 1981-01-26 1983-01-18 Glass Henry P Nestable undercut bedpan
JPS57181424A (en) * 1981-04-30 1982-11-08 Hitachi Metals Ltd Magnetic head device
JPS5965922A (en) * 1982-10-07 1984-04-14 Sumitomo Special Metals Co Ltd Magnetic head assembly body
EP0110513A3 (en) * 1982-10-19 1985-09-18 EASTMAN KODAK COMPANY (a New Jersey corporation) Common reluctance path multi-gap magnetic transducer
JPS59185015A (en) * 1983-04-04 1984-10-20 Hitachi Ltd Magnetic head and its manufacture
JPS60226455A (en) * 1984-04-19 1985-11-11 日立金属株式会社 Non-magnetic ceramic for magnetic head
EP0197158B1 (en) * 1984-10-05 1993-01-13 Olympus Optical Co., Ltd. Compound magnetic head
JPS61196412A (en) * 1985-02-27 1986-08-30 Mitsubishi Electric Corp Magnetic head and its manufacture
JPS61227209A (en) * 1985-03-30 1986-10-09 Toshiba Corp Magnetic head
US4686596A (en) * 1985-06-27 1987-08-11 Minnesota Mining And Manufacturing Company Recording head core yoke and method of manufacture
US4750071A (en) * 1985-08-28 1988-06-07 Canon Denshi Kabushiki Kaisha Magnetic head assembly including a pair of heads disposed in the vicinity of each other
JPH0249207A (en) * 1988-08-09 1990-02-19 Nec Corp Magnetic head
US20080074227A1 (en) * 2006-09-21 2008-03-27 Ford Global Technologies, Llc Inductor topologies with substantial common-mode and differential-mode inductance

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557445A (en) * 1968-01-02 1971-01-26 Honeywell Inc Method of fabricating slant cores
NL157442B (en) * 1968-08-22 1978-07-17 Philips Nv PROCEDURE FOR MANUFACTURE OF A POLE SHOE UNIT FOR A MAGNET HEAD, AND AN POLAR SHOE UNIT MADE IN ACCORDANCE WITH THIS PROCESS.

Also Published As

Publication number Publication date
JPS5331763B2 (en) 1978-09-05
DE2437094A1 (en) 1975-03-20
FR2240495B1 (en) 1976-06-25
US3846840A (en) 1974-11-05
NL7410455A (en) 1975-02-12
SE7409316L (en) 1975-02-11
CA1031861A (en) 1978-05-23
DE2437094B2 (en) 1979-07-12
SE400402B (en) 1978-03-20
FR2240495A1 (en) 1975-03-07
GB1422509A (en) 1976-01-28
IT1015220B (en) 1977-05-10
DE2437094C3 (en) 1980-03-06
JPS5040118A (en) 1975-04-12

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Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: INTERNATIONAL BUSINESS MACHINES CORP.

Effective date: 19940809